body {
    /* background: #f2f2f2; */
    background: #282c34;
}

.frame {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 400px;
    height: 400px;
    margin-top: -200px;
    margin-left: -200px;
    border-radius: 2px;
    box-shadow: 1px 2px 10px 0px rgba(0, 0, 0, 0.3);
    background: #2c3e50;
    font-family: 'Open Sans', Helvetica, sans-serif;
    overflow: hidden;
}

#cb {
    display: none;
}

.circle,
.circle-outer {
    position: absolute;
    width: 200px;
    height: 200px;
    top: 65px;
    left: 100px;
    background: #354a5f;
    border-radius: 50%;
}

.circle-outer {
    box-sizing: border-box;
    background: none;
    border: 4px solid #354a5f;
}

.icon {
    position: absolute;
    z-index: 2;
    top: 130px;
    left: 140px;
    fill: none;
    stroke-width: 2px;
    stroke: #ecf0f1;
    stroke-linecap: square;
    stroke-dasharray: 325 325;

    &.mail {
        width: 120px;
        height: 70px;
        stroke-dashoffset: 0;
    }
    &.plane {
        width: 120px;
        height: 110px;
        stroke-dashoffset: 325;
    }
}

.button {
    position: absolute;
    z-index: 10;
    width: 200px;
    height: 40px;
    top: 290px;
    left: 100px;
    background: #ecf0f1;
    color: #2c3e50;
    text-align: center;
    line-height: 40px;
    border-radius: 20px;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 15px;
    cursor: pointer;
    user-select: none;

    &.reset {
        opacity: 0;
        z-index: 5;
    }

    &:hover {
        background: #1abc9c;
        color: #fff;
    }
}

#cb:checked ~ .button {
    animation: button 1.5s ease-in-out 1.7s;
    animation-fill-mode: both;
}

#cb:checked ~ .reset {
    animation: reset 1.5s ease-in-out 3.7s;
    animation-fill-mode: both;
}

#cb:checked ~ .circle {
    animation: circle 1s ease-in-out;
    animation-fill-mode: both;
}

#cb:checked ~ .circle-outer {
    animation: circle 0.8s ease-in-out 0.2s;
    animation-fill-mode: both;
}

#cb:checked ~ .mail {
    stroke-dashoffset: 326;
    transition: stroke-dashoffset 1s ease-in-out;
}

#cb:checked ~ .plane {
    stroke-dashoffset: 0;
    transition: stroke-dashoffset 1s ease-in-out 0.6s;
    animation: fly 2.4s ease-in-out;
    animation-fill-mode: both;
}

@keyframes fly {
    0%,
    50% {
        transform: translate3d(0, 0, 0) scale(1);
    }
    60% {
        transform: translate3d(-10px, 5px, 0) scale(1.05);
    }
    70% {
        opacity: 1;
    }
    85% {
        opacity: 0;
    }
    100% {
        transform: translate3d(300px, -150px, 0) scale(0.4);
        opacity: 0;
    }
}

@keyframes circle {
    0% {
        transform: translate3d(0, 0, 0) scale(1);
    }
    20% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(0);
    }
}

@keyframes button {
    0% {
        transform: scale(1);
    }
    30% {
        background: #1abc9c;
        color: transparent;
        width: 200px;
        left: 100px;
    }
    50%,
    60% {
        width: 40px;
        left: 180px;
        transform: scale(1);
    }
    70% {
        transform: scale(1.1);
    }
    100% {
        width: 40px;
        left: 180px;
        background: #1abc9c;
        color: transparent;
        transform: scale(0);
    }
}

@keyframes reset {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}
